Multiple tire sidewall mold



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- MULTIPLE TIRE SIDEWALL MOLD I Filed Feb. 11. 1944 4 Sheets-Sheet l 'Ill ltll Imvutar Oetzs, 1947. 1 'G EWMGHT 2,429,786

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Patented Oct. 2.8, 1947 UNITED STATES PATENT OFFICE MULTIPLE TIRE SIDEWALL MOLD Grady Edward Wright, Waco, Tex.

Application February 11, 1944, Serial No. 521,969

3 Claims.

This invention relates to a multiple mold or vulcanizing structure for simultaneously handling and repairing sidewalls of pneumatic tire casings and the principal purpose is to provide a comparatively simple and expedient apparatus for readily and satisfactorily repairing cuts,

l chiefly characterized by two or more sidewall repair molds, arranged in spaced superposed relation, mounted on a base and provided with means for applying steam pressure and forclamping the co-acting series of molds.

In addition to the mold adjusting and clamping means, the structure also embodies, for use in conjunction with two or more tires, a central or intermediate mold unit and lever-controlled hoisting and pivoting means allowing-said unit to be swung to one side to facilitate insertion and removal of the wheel and tire assemblies.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings.

In the drawings wherein like reference numer- Figure 4 is a fragmentary detail sectional and elevational View employed to bring out the twoway center mold unit and lifting and pivoting means therefor.

Figure 5 is a fragmentary detail sectional and elevational view, this being taken somewhat centrally through the sheath and projectible and retractible locking bolt `used in conjunction therewith.

Figure 6 is a View at right angles to the structureseen in Figure 5.

the hub-like tube or guide 23.

Figure 7 is a top plan view of the projectible and retractible locking bolt. Y

Figure 8 is a horizontal section on the plane of the line 8-8 of Figure 3.

Figure 9 is a cross section on an enlarged scale, on the line 9-9 of Figure 3.

Figure 10 is a section which may be said to be taken approximately on the plane of the line lil-I0 of Figure 6.

In the modification shown which illustrates an example for treating two tires the supporting table is designated by the reference numeral II (Figures 1 and 3).

This table is provided with legs I2 consisting of angle irons held and reinforced by a frame I3 arranged in their lower portion. A lever I4 is pivotallt7 mounted at I5 on one of the frame members and projects beyond the frame structure and is provided with a foot-piece I6, the purpose of which will be described below. The lowermost and relatively xed mold unit, indicated at Il, forms the top of the table. It comprises an annulus I8 of appropriate proportions whose top wall is of a curvature, as indicated at I9, to conform to the sidewall of the adjacent tire 29. It

Vwill be noticed in Figure 3 that the tire includes the casing and tube in the casing, both parts being mounted on the usual wheel 2|. These parts form the assembly handled in the apparatus. Attached to the bottom wall of the mold are radially disposed suitably shaped reinforcing fins 22 which in conjunction with the central tubular hub member 23 form a spider. The mold unit and spider are joined together and both parts are mounted rigidly on the legs coacting with them to form the table structure. The numeral 24 designates a sheath of suitable shape and proportion attached to and cooperating with From Figures 5 and 6 it will be seen that the sheath is made up of centrally apertured horizontal parallel plates 25 and 26 with marginal facers 21 therebetween. The sheath is of rectangular form and forms a slideway for the head portion 28 of the locking bolt 29. The head portion has a keyhole slot 30 therein which is registrable with the guide tube and narrow portions coacting selectively for registration with the guide tube 23.

Also coacting with the guide tube 23 is a perpendicular-centrally disposed clamping rod orV member 33 whose upper end is screw-threaded as eccentrically arranged on the intermediate double acting mold, adapted to rotate around said rod and providing a means for lifting said intermediate double acting mold along said rod and for rotating it around its vertical axis as a pivot,

guiding means for the lifting rod and an operating lever linked to said liftingrod for the vertical axial shifting of the same.

GRADY EDWARD WRIGHT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PA'INTS Number Name Date 2,028,618 Macbeth Jan. 21, 1936 2,029,060 Cozzo Jan. 28, 1936 2,169,146 Iverson Aug. 8, 1939 2,147,339 Glynn Feb. 14, 1939 2,295,438 Vaniman Sept. 8, 1942 1,234,065 Miller July 17, 1917 1,357,617 Crush Nov, 2, 1920 

